Pulsatory device for milking machines



p 1953 H. P. SEGEBARTH V 7 2,652,847

PULSATORY DEVICE FOR MIIQKING MACHINES Filed Feb. 8. 1951VIIIIIIIIIIIIA..-

INVE/VTOK HERMAN mulsmsukm -By ZZM r/w uk,

Patented Sept. 22, 1953 BULSATORX DEVICE'FGR MILKIN G'.

MACHINES;

Herman Paul" Segebarth, Brussels; B rg" signo'r" to S-ocicte" Anonymed'e'si' Ec're euses. Perso'on's, Thildonck-Wespeljaer; Belgium, a"

Applicati'on February 8, 195 1; S'OliflLNO- 2093958 In Belgium February10,,1950' aelaims. (01. 1 37 40 3? The invention relates to a 'milk'erpulsatoi" of the diaphragm type and adapted to be fitted onto the coverof a milking machine jug or of a milker p i It the; main object of'theinvention to produce a pulsato'r of this type, which is particularlysimply constructed. and. may be operated for a long time" without anyrisk of misadjustment and without the. necessity of using, parts, whichare liable to wear quickly".

A preferred" embodiment of the-invention will now b' described,reference being made to theaccompanying drawing, the description and thedrawings being. given by way of. eXemplifica-tion merely. In thedrawings:

Figs. 1 and 2 are two sectional views of the pulsator in two difierentoperative positions.

The body structure I of the pulsatcr is provided with an upper recess 24and a lower or bottom recess III, the upper recess 24 being subdividedby a diaphragm 2 into two superposed compartments, viz. an uppercompartment 3 and a lower compartment 4. The diaphragm is held between acover 5 and a plat 6. The body structure I is secured to the cover C ofthe jug or milker pail. A vertical tube I is suspended from the centerportion of the diaphragm and the inner bore 8 of the tube communicatesthrough bore 9 surrounding the latter with the compartment 4.

The lower end of the tube I opens into a lower recess or chamber Illconnected with a source of vacuum through a pipe 22; the compartment 4is in permanent communication with the source of vacuum through openings9, bore 8, chamber In and pipe 22.

The tube 1 carries two discs I I and I2 made of rubber or any othersuitable elastic material, the disc II being adapted to move insidechamber Iil while the other disc I2 is vertically movable in centerchamber I3 surrounding the tube and inside the body structure I; thechamber I3 is connected with the outer atmosphere through a channel I4.

As already mentioned, the tube 1 is free in its movements due to theopening I5, the diameter of which is larger than the outer diameter ofthe tube 1 and of the presence between the recesses I0 and chamber I3 ofan annular projection I6 provided with a bore H, the diameter of whichis substantially larger than the outer diameter of the tube 1.

A pipe I8 connects the center chamber I3 and bore I I surrounding thetube I with the compartment 3 located above diaphragm 2. A screwregulator valve I9 is provided in pipe I8 which 21 permits theadjustment of the operational speed off'the pulsatory arrangement.

The. b'ore I'I" communicates through. pipe 21 with the teat cups; notshown.

The device is' operated, as. follows. I

The diaphragm 2" is in. its lower positioni as illustrated in Fig. l;suction is created inside compartment 3 abovethe diapl'irag'm- 2 throughthepip'e I8,..th'e' bore I'l the chamber I}! and' the' channel 22;consequenny, the tube 1 rises by reason of" the' connection" between thecompart ment It and the atmosphere entering through the annular openingt5; the chamber t3 andthepipe lid; The pressureinsidetlie compartment 4will thus be' 'lessthan the atmospheric pressure but" higher than thepressure in the compart ment 3.

When the diaphragm 2 is in its uppermost position, the resilient discsII and I2 assume the position indicated by numerals I I and I2 in Fig. 2and an unrestricted vacuum action is created, inside the compartment 4through the bores 9, the bore 8, the chamber It! and the channel 22. Thecompartment 3 maintains, at the same time, an exclusive atmosphericpressure through channel I8, the chamber H, the chamber I3 and thechannel I4.

The change of vacuum and atmospheric pressure in the chambers is appliedto the teat cups by the vertical movement of the discs II and I2,carried by the tube 7 and the displacement of the latter is controlledthrough the variation of pressure in the compartments 3 and 4.

In the position illustrated in Fig. 1 where the diaphragm is lowered,the disc I2 rests on its lower seat consisting of the annular projectionI6; the teat cups are therefore connected with the source of vacuumthrough the passages, 2|, I'I, I0 and 22.

In the position illustrated in Fig. 2, where the diaphragm is raised,the lower disc I I is in contact with its upper seat and atmosphericpressure prevails inside now, the tube 2| by reason of the annular spaceI? into which it opens the latter being connected with the pipe throughthe center chamber I3.

A pulsatory device executed according to the invention has the advantageof being very simple in structure; it is only operated by means of twowasher-shaped closing members, or discs made of elastic or plasticmaterial and cooperat ing with accordingly positioned rigid seats; oneof these seats, namely the annular projection I6 formed on the bodystructure alternately serves as a seat for each of the discs I I, I2.

Furthermore, the disks of misadjustment and wear are reduced to aconsiderable extent because the tube is allowed complete freedom ofmovement throughout its stroke and due to the absence of any rigidclosing member frictionally engaging a metal surface.

Since certain changes may be made in the above article and differentembodiments of the invention could be made without departing from thescope thereof, it is intended that all matter contained in the abovedescri tion or shown in the accompanying drawing shall be interpreted asillustrative and not in a limiting sense.

Having thus described the invention, what I claim as new and desire tobe secured by Letters Patent, is as follows:

1. A milker pulsator comprising in a body structure a top recess and abottom recess, an inner centrally located chamber, covers for each ofsaid recesses, a substantially horizontal bendable diaphragm extendingthroughoutsaid top recess and dividing the same into an uppercompartment and a lower compartment, said compartments being superposedupon each other, a tube vertically suspended from the center of saidbendable diaphragm and thereby adapted to be vertically displaced, twovertically superposed bores between said tubes and said body structureadapted to connect said inner chamber to said upper recess and saidlower recess, the inside of said tube being in permanent communicationwith said lower compartment, said tube opening freely at its lower endinto said bottom recess, a passage permanently connecting said lowerrecess with a source of a vacuum, a passage to permanently connect saidinner chamber with the outer atmosphere, a passage to permanentlyconnect said lower bore with teat cups, a passage to connect said lowerrecess to the upper compartment, vertically superposed spaced resilientmembers fastened to said tube and vertically displaceable therewith andadapted to establish by their vertical displacement alternatively aconnection be tween said bottom recess and both the passages leading tosaid teat cups and said upper compartment while the inner chambercommunicates with said lower compartment, said resilient members beingupwardly displaced to interrupt the connection between said lowerrecess, the passages leading to said teat cups and to said uppercompartment while establishing communication between said inner chamber,the passage leading to the teat cups and said upper compartment uponmovement of the diaphragm due to the atmospheric pressure acting on thesame as opposed to the vacuum action upon the diaphragm in the uppercompartment.

2. In a milker pulsator according to claim 1, the resilient membersbeing disc-shaped.

3. In a milker pulsator according to claim l, a valve being adjustablylocated in the passage connecting the lower bore and the uppercompartment.

HERMAN PAUL SEGEBARTH.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,392,346 McCornack Oct.'4, 1921 2,480,239 Harstick Aug. 30,1949

